18550080 has 224 divisors, whose sum is σ = 69494400. Its totient is φ = 4644864.

The previous prime is 18550079. The next prime is 18550093. The reversal of 18550080 is 8005581.

18550080 is a `hidden beast` number, since 1 + 85 + 500 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164104 + ... + 164216.

Almost surely, 2^18550080 is an apocalyptic number.

18550080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18550080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34747200).

18550080 is an abundant number, since it is smaller than the sum of its proper divisors (50944320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18550080 is a wasteful number, since it uses less digits than its factorization.

18550080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 18550080 is about 4306.9803807308. The cubic root of 18550080 is about 264.7170588745.

The spelling of 18550080 in words is "eighteen million, five hundred fifty thousand, eighty".